package com.heima.kafka.sample;

import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.ProducerConfig;
import org.apache.kafka.clients.producer.ProducerRecord;

import java.util.Properties;

/**
 * @author 胡慧
 * @title: ProducerFastStart
 * @projectName heima-leadnews
 * @description: 消息生成者
 * @date 2021/2/2416:24
 */
public class ProducerFastStart {
    public static void main(String[] args) {
        Properties properties = new Properties();
        //kafka的连接地址
        properties.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "81.70.87.22:9092");
        //发送失败，失败的重试次数
        properties.put(ProducerConfig.RETRIES_CONFIG, 5);
        //消息key的序列化
        properties.put(ProducerConfig.KEY_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringSerializer");
        //消息value的序列化器
        properties.put(ProducerConfig.VALUE_SERIALIZER_CLASS_CONFIG, "org.apache.kafka.common.serialization.StringSerializer");

        //生成者对象
        KafkaProducer<String, String> producer = new KafkaProducer<String, String>(properties);
        //    封装发送消息
        ProducerRecord<String, String> record = new ProducerRecord<String, String>("heima-topic", "10001", "hello");
        //    发送消息
        producer.send(record);
        //关闭消息通道，必须关闭，否则消息发送不成功
        producer.close();
    }
}
